Challenge: Xiangqi: The Red Move and the Secret of the Defender - Tactics Academy - Can you solve it?

When the Red Horse moves to 5-7, Black's position is like a stone wall. The Red Cannon at 8-6 fires at the Black Pawn at 3-2, creating psychological pressure. But why does the Black Advisor remain stationary at 6-8? A lesson in patience and absolute calm in this chessboard scenario.